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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Neuropsychologia. 2016 Mar 26;93(Pt B):501–512. doi: 10.1016/j.neuropsychologia.2016.03.023

Figure 3. Hand-dependent (panel A) and hand-independent (panel B) neural substrate of praxis planning.

Figure 3

(A) When left-handers plan gestures with their right hand, nearly all the areas revealed in an initial contrast of right-hand gesture planning vs. LC are activated more, and more extensively than for the left hand. The inverse contrast (of left vs. right hand) revealed no significant difference. (B) Areas engaged in praxis planning vs. the linguistic control (LC) across both hands. In addition to the dorsal premotor and pre-supplementary motor areas that were activated bilaterally, the left inferior parietal lobule, including the supramarginal gyrus and the ventro-lateral bank of the anterior intraparietal sulcus (SMg/aIPS) was activated only on the left. Additional small cluster of hand-independent activity was observed in cMTg, caudal inferior temporal gyrus (cITg), and the cerebellum on the left.